Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
ban thanh » ban hanh, ban hang
toan cua » than cua, tan cua, doanh cua
tu sach » thu sach, su sach, te sach
co sach » bo sach, cuon sach, hoc sach
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (co sach)) ky tang ma hoi. hieu va cac duc ban thanh toan cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (co sach)) ky tang ma hoi. hieu va cac duc ban thanh toan cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (co sach)) ky tang ma hoi. hieu va cac duc ban thanh toan cua vat*.